C60 and C70 fullerenes dissolved in toluene or n-hexane have been found to be decomposed by near-infrared Nd:YAG laser radiation even at moderate intensities (λ=1064 nm, I=35-70 MW/cm2) quite effectively. Formation of a fine precipitate, occurring during the photolysis, has been studied turbidimetrically. Cubic intensity dependence of the decomposition efficiency was found. The multiphoton dissociation of fullerenes leads to a formation of the fine black precipitate whose particles, overheated by the pulsed laser radiation, cause further decomposition of fullerene cages.
|Number of pages||6|
|Journal||Chemical Physics Letters|
|State||Published - 12 Nov 1999|
Bibliographical noteFunding Information:
L.J., V.H., Z.P., A.M. and M.P. are grateful to the Czech Ministry of Education for support of this work under contract ME328. L.J. thanks Bar-Ilan University for postdoctoral fellowship and hospitality in academic year 1997/1998 when a part of this Letter was written and the experiments with the DCR-11 Nd:YAG laser were carried out. Finally, S.C. and E.K. would like to thank the ULF facility operating at FORTH-IESL (Contr. Nr. ERBFMGECT 950021) for support and Quantel for the loan of the Brilliant Nd:YAG laser.